Military Engineer Services-MES has published Tender For Repair/Renewal Of Water Supply Lines Including Cleaning Of Under Ground Reserviors, Pvc/Rcc Service Tanks And Periodical Maintenance And Operation Of Filteration Plants At Bsa Complex And Gokhle Road Complex Under Ge Alipore Kolkata. Submission Date for this Tender is 25-07-2023. Water Pipe Line Tenders in kolkata West Bengal. Bidders can get complete Tender details and download the document.
| Sr No | CorrigendumDate | Corrignedum | CorrigendumType | NewSubmissionDate |
| 1 | 18-Jul-2023 | Bid Auto Extn Corrigendum | Bid Auto Extn Corrigendum | 25-07-2023 |
| Sl. No. | Item Description |
| 1 | M&L for Cleaning ofR.C.C. Under Ground Sump of capacity 25000 Glns by 6 stage mechanized cleaning system, with imported machines, complete with the follwing process Preliminary Step Cleaning the surrounding area of the sump /Tank with high pressure jet to remove dirts, algaes, muds etc. Stage - 1(Mechanized Dewatering) Pumping out the water stored inside the sump / tank to a considerable level by using special type dewatering pump. Stage - 2 (Sludge Removal) Sucking & removal of residual water and sludge, which has settled on the floor of the sump / tank, with the help of special type high power sludge pumping equipments. Stage - 3 (High Pressure Cleaning) Thoroughly cleaning of the walls / ceillings of the tank by using high pressure jet cleaners to remove the algaes / contaminants cling on the internal surfaces of the tank which helps the growth of microbiological contamination. Stage - 4 (Vacuum Cleaning) Removing of sludge, already deposited between rough surfaces of walls / ceilling / floor of the tank, with high power industrial vacuum cleaner machine, to make the tank absolutely speck free, Stage - 5 (Anti-bacterial Spray) Spraying of anti-bacterial agentto all the walls,ceilling,floor of the tank, for necessary anti-bacterial treatment, with high pressure spray machine, to make the tank totally bacteria free. Stage - 6 (Ultra Violet Radiation) Sterilisation and disinfection of the tank by using specially designed UV radiator machineto kill any suspended / floating bacteria, if any, present inside the tank. This process shall be applied on the following sumps / tanks :- |
| 2 | All as per item 1 here in before but for R.C.C. Over head tank of capacity 2000 Ltrs to 25000 Glns |
| 3 | All as per item 1 here in before but for PVCOver head tankof capacity 250 to 2000 Ltrs |
| 4 | Material and labour for construction of masonary valve pit chamber of size 1000x1000x900mm internally with burnt brick (Sub class "B") full brick thick brick work in cement mortor (1:6), 10 mm thick plastering in CM(1:4) internally and externally upto 150mm below the ground level, 150mm thick PCC (1:4:8) type D-2 (using 40mm graded stone aggregated) as in foundation bed with 150mm all round of set from outer side of brick work, 3 mm thick MS sheet cover with locking arrangement hinged with 50 x 50 x 6 mm angle iron frame embeded in PCC (1:3:6) type C-1 (using 20mm graded stone aggregated) as coping etc including painting with two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer on steel surfaces including necessary earth work in soft/loose soil complete all as specified and directed. |
| 5 | Collecting the sample of water of required quantity in bottle/kit from different point submitted duly levelled the source through Engineer-in-charge for forwarding to the test house and testing of water for iron, PH value, Hardness, trubidity, chloride, fluoride ,aresenic test andsubmitting the test report in triplicate done from NABL & ISO 17025 accredited laboratory/National test House/Govt approvedlaboratory complete all as specified anddirected . Note : Testing shall be carried out quarterly. |
| 6 | Collecting the sample of water of required quantity in bottle/kit from different point submitted duly levelled the source through Engineer-in-charge for forwarding to the test house and carrying out bacteriological test for water sample quarterly and submitting the test report in triplicate done from NABL & ISO 17025 accredited laboratory/National test House/Govt approvedlaboratory complete all as specified anddirected Note: Sample of water shall be collected and tested quarterly. |
| 7 | Excavation in trenches not exc 1.5 m in depth and not exc 1.5 m wide for taking out/laying CI/GI pipes and getting out in soft/loose soil complete all as specified and as directed |
| 8 | Removing excavation soil at a distance not exc 50 m and deposited where diverted complete all as specified anddirected |
| 9 | Returning,filling in including spreading, leveling, watering and well rumming in layers not exc 25 cm thick complete all as specified and as directed |
| 10 | Taking up or down steel tubing & connection and removal from site directed for GI pipe 80mmbore of pipes complete all as specified and directed |
| 11 | All as per item No 10 here in before but 50mm bore GI pipe. |
| 12 | All as per item No 10 here in before but40mm bore GI pipe. |
| 13 | All as per item No 10 here in before but25mm boreGI pipe. |
| 14 | All as per item No 10 here in before but20mm boreGI pipe. |
| 15 | Supply and laying galvanised iron pipes ofmedium grade with ISI Marked with all tube fittings ( such as bends, elbows, tees, short pieces of medium grade , connectors, back-nuts,caps, plugs and unions etc.) layingin trenches/ floors/ ducts and also cutting pipes, screwing,and for making forged bends on piping as required for the 80mm bore of pipes complete all as specified and directed |
| 16 | All as per item No 15 here in before but50mm bore GI pipe. |
| 17 | All as per item No 15 here in before but40mm bore GI pipe. |
| 18 | All as per item No 15 here in before but25mm bore GI pipe. |
| 19 | All as per item No 15 here in before but20mm bore GI pipe. |
| 20 | Supply and fixing for 50mm bore gun metal gate valve conforming to IS -778 with iron wheel head,screwed both ends on GI pipes with GI union including taking down old gun metal valve complete all as specified and directed |
| 21 | All as per item No 20 here in before but40mm bore gun metal gate valve . |
| 22 | All as per item no 20 here in before but25mm bore gun metal gate valve. |
| 23 | All as per item no 20 here in before but 20mm bore gun metal gate valve. |
| 24 | Supply & fixing for 100 mm boreMS pipe, heavy duty (Class "C") of thickness 5.4mmwith flanged end commissioning to (IS 1239)(Part "A" 2004) including painting with two coats of black bitumines paint (suitable for drinking water)over a coat of good quality metal primerincluding taking down old pipe complete all as specified anddirected.Note: The rates shall include the cost of consumables for cutting and welding. |
| 25 | All as per item No 24 here in before but 80mm bore |
| 26 | All as per item No 24 here in before but 50mm bore |
| 27 | Detection of leakage in water main by required excavationin water logged/foul condition including bailing out leakage water by bucket etc for repair of leakage GI pipe of size 80/50 mm diameter bore including cutting, threading for addition & alternating for all as required as per the site including cost of labour charges and re-fixing of necessary fittings such as socket ,bend,elbow,etc in existing location complete all as specified anddirected. |
| 28 | Detection of leakage in water main by required excavationin water logged/foul condition including bailing out leakage water by bucket etc for repair of leakage GI pipe of size 40/25/20 mm diameter bore including cutting, threading for addition & alternating for all as required as per the site including cost of labour charges and re-fixing of necessary fittings such as socket ,bend,elbow,etc in existing location complete all as specified anddirected. |
| 29 | Detection of leakage in water main by required excavation in water logged/ foul condition without hampering water supply including bailing out leakage water by bucket etc for repair of leakage in CI pipe of 150/100/80 mm size by burning out lead joints wherever required including cutting, threading for addition & alternating for insulation of fitting all as requiredcomplete all as specified anddirected. |
| 30 | Supply and fixing for 150mm dia cast iron butter fly valve IS-13095-1991 double flanged and wafer type(PSI-250) including all accessories including taking up/down of old unserviceable valve complete all as specified anddirected. |
| 31 | All as per item No 30 here in before but 100mm dia |
| 32 | All as per item No 30 here in before but 80mm dia |
| 33 | All as per item No 30 here in before but 50mm dia |
| 34 | Material and labour cast iron sluice valve conforming to IS -14846 with flanged ends of class PN 1.6 ISI marked, drilled for bolts comprising of brass spindle cast iron operating wheel, including necessary rubber gasket joint complete with nuts boltsand washer for thesize of 150 mm dia bore complete all as specified anddirected. |
| 35 | All as per item No 34 here in before but 100mm dia bore size |
| 36 | All as per item No 34 here in before but 80mm dia bore size |
| 37 | Supply and fixing for mild steel angle iron grade Fe 310-0 as in framing of valve pit cover including hinge and locking arrangementcomplete all as specified and directed. |
| 38 | Supply and fixing for 3mm thick mild steel plate conforming to Fe 310-0 as in covering of valve pit chember complete all as specified and directed. |
| 39 | Material and labour for painting of steel plate & mild steel angleany sizewith two coats of superior quality synthetic enamel paint after cleaning of existing surface complete all as specified and directed. |
| 40 | Supply and fix for PP-R Gate valves (brass insert) of 63 mm outer dia Complete with fittings by providing and fixing suitable PPR fittings including cutting and making fusion joint etc complete all as specified and directed. |
| 41 | Supply and fix for PP-R Gate valves (brass insert) of 90 mm outer dia Complete with fittings by providing and fixing suitable PPR fittings including cutting and making fusion joint etc complete all as specified anddirected. |
| 42 | Supply and laying for ductile iron pipe centrifugally cast-IS-8329-2000 of 150mm dia class K9, flanged end with and including rubber gasket joint complete with nuts and bolts but excluding DI specials complete in any length laid in trenches or in ground including taking down of old pipes complete all as specified and directed. |
| 43 | All same as item No 42 here in before but 100mm diameter complete all as specified and directed. |
| 44 | Dimantling and taking up of old fittings and Supply and fixing DI specials class K-12 both end flanged or both end spigot/socket or one end flanged and other end spigot/socket any type such as bends, tapers, reducers, duck foot bend, tee pieces (single and double branch), etc including cutting of pipes for upto 150 mm dia ductile iron pipe as per site requirement complete all as specified anddirected. |
| 45 | Labour only for mixing and dosing calcium hypochlorite based granular chlorination chemicals (disinfectant for water treatment) complete all as specified anddirected at site by the Engr-in-charge. Note :- Calcium hypochlorite shall be issued for free for dosing under Schedule "B". Transportation of chemical from MES store to dosing point shall deemed to be included in quoted unit rate. |
| 46 | Supply and mixing for common salt (Non iodised, best quality locally available) of 50 Kg bag complete all as specified and directed. Note : Materials supplied shall be deposited to store and proper receipt taken. For regular consumption of materials shall be issued &maintain record duly signed by Engr-in-charge and contractor. |
| 47 | Comprehensive maintenance of Water Treatment Plants (softening plant) with accessories for safe and efficient running at BSA Complexfor the period of one calender month including repair/renewal of spare parts as and when required for smooth and efficient functioning of the plant of capacity of 10000 GPH and consisting of following accessories complete all as specified anddirected by the Engineer-in-Charge:- (a) One pressure filter capacity 10000 GPH. (b) One Softner capacity 10000 GPH.. (c) One oxidation chamber.10000 GPH (d) One brine solution tank. (e) One Air compressor. (f)Chlorine dozing pump including service tank. (g)Accessories for above items. Note:- (i) Unit rates shall be deemed to be inclusive of taking down unserviceable parts/accessories and refixing the same after minor repairs as required, adjustments of settings, cleaning down etc and replacement with new spare parts (measured separately) as and when required and including plant operations such as back washing, rinsing of filter and regeneration of resin, rinsing and blending and testing of water for hardness and iron on daily basis (Morning & Evening) for smooth and efficient functioning of the plant. (All required Testing kits will be provided by the contractor including chemicals / reagent required for testing.Tests will be conducted upto the entire satisfaction of Engr in Charge).Contractor shall be responsible for making salt solution and charging of salts. (ii) New spare parts required for renewal shall be measured and paid for separately under relevant items. |
| 48 | All as per item No 47 here in before but for Gokhale Road Complex. |
| 49 | Material and labour for preparing of outer surfaces of IR plant tank of pressure feed filtration plant comprising of oxidation plant, iron removal plant, brine solution, softeing plant of 10000 gallon capacity including all frontal pipes located at Pump House and applying one coat of synthetic enamel paint (as per existing colour) with spray painting machine including arrow marking on inlet and outlet pipe line after applying one coat of red oxide primer complete all as specified anddirected. |
| 50 | Material and labour for one coat of synthetic enamelpaint(external surfaces) for old painted surfaces of pipes those are exposed and laid horrizontally at Pump House not exc. 10mm width or girth after complete removal of loose paint, sludges, rust etcincluding one coat of red oxide primer complete all as specified anddirected. |
| 51 | Material and labour for preparation of old painted air compressor equipment body such as electric motor, air cylinder and compressor etc and applying two coats of grey synthetic enamelpaint on motor/air cylinder/air comprssor body and two coats of red syntheic enamel painton fan guard and two coats black synthetic enamel paint on base channel frame with spray machineincluding one coat of red oxide primer complete all as specified anddirected. |
| 52 | Taking out burntcopper winding from motor of up to 3 HP capacity andrewindingwith super enamelled best quality copper wire of suitable gauge including insulation,heat varnishing and refixing in position including testing and commissioning complete all as specified and asdirected. |
| 53 | Supply and pouring resin inside beds of softening plant chamber complete all as specified anddirected. Note : Materials supplied shall be deposited to store and proper receipt taken. For regular consumption of materials shall be issued &maintain record duly signed by Engr-in-charge and contractor. Make :- Zeolite 320/ Thermax/ Indion 225NA |
| 54 | Supply and fixing as in repair 3/8" dia white transparent suction tube complete all as specified and asdirected. |
| 55 | Supply and fixing as in repair 3/8" diawhite transparent delivery tubecomplete all as specified and directed. |
| 56 | Supply and fixing as in repair water pressure gauge 0.150 Ibs/2/0-12kg/Sqcm capacity complete all as specified and directed. |
| 57 | Supply and use hardness water testing chemicals re-agent solution "A", "B" & "C" complete all as specified and directed. |
| 58 | Supply, cleaning and filling the pressure filter sand inside the pressure filter (type of sand 16/30 mesh) complete all as specified anddirected. Source: Baraker river. |
| 59 | Supply, cleaning and filling the pressure filter gravel / fileter media of size upto 25mm complete all as specified and directed. Source: Baraker river. |
| 60 | Supply and charging inside the oxidation chamber of catalyst (MNO2) complete all as specified and directed. |
| 61 | Supply and fixing for 100mmbore diaphram valve angular with rubber diaphgram including taking out old unserviceable one complete all as specified anddirected. Make : Kirloskar/Upadhaya/Kirloskar/Leader/Kalpana |
| 62 | Supply and fixing for 80mm bore diaphram valve angular with rubber diaphgram including taking out old unserviceable one complete all as specified and directed. Make : Kirloskar/Upadhaya/Kirloskar/Leader/Kalpana |
| 63 | Supply and fixing for 50mm bore diaphram valve angular with rubber diaphgram including taking out old unserviceable one complete all as specified anddirected. Make : Kirloskar/Upadhaya/Kirloskar/Leader/Kalpana |
| 64 | Supply, hoisting and fixing in proper position ISI embosed three layer rotational moulded polyethylene water storage tank (cylindrical vertical with closed top), of capacity 2000 litres including providing necessary connections after disconnecting and taking down of existing tanks complete all as specified and as directed. |
| 65 | All as per item No 64 here in before but 1000 ltrs capacity |
| 66 | All as per item No 64 here in before but 750 ltrs capacity |
| 67 | All as per item No 64 here in before but 500 ltrs capacity |
| 68 | S & F for 50mm ball brass valves, high pressure, with polythene float and flynut complete, screwed for iron pipe or brass ferrule and fixed complete all as specified anddirected. |
| 69 | S & F for 40 mm ball brass valves, high pressure, with polythene float and flynut complete, screwed for iron pipe or brass ferrule and fixed complete all as specified anddirected. |
| 70 | S & F for 25 mm ball brass valves, high pressure, with polythene float and flynut complete, screwed for iron pipe or brass ferrule and fixed complete all as specified anddirected. |
| 71 | S & F for PVC Tank cover of capacity 2000/1500Ltrs of suitable size/dimension of existing PVC tank complete all as specified anddirected. |
| 72 | S & F for PVC tank Cover of capacity 1000/750 Ltrs of suitable size/dimension of existing PVC tank complete all as specified and as directed. |
| 73 | S & F for PVC tank cover of capacity 500/300 Ltrs of suitable size/dimension of existing PVC tank complete all as specified and directed. |
| 74 | Devolopment of deep tube well by means of diesel engine operated air compressor of suitable capacity up to 350 CFMtill sand / mud /slit free waterof portable quality is obtained , length of air hose pipe will be selected as ground requirement and to achieve a minimum discharge of 10000 GPH including lowering and lifting of air pipe, complete all as specifiedand directed by the Engr - in -charge at the the following schedule. location: Turf view& HQ BA |
| 75 | First day compressor runs |
| 76 | Second day compressor runs |
| 77 | Third day till quality water achieve. Note :- (i) Compressor with connected accessores and fuel shall be arranged by the contractor and at last 05 kg raw caustic will be added in to each bore well before 24 hours for 1st & 2nd day only. Cost of which shall deem to be included in unit rate quoted. (ii) Pea grevel shall be measured and paid separately under appropriate item. |
| 78 | M & L for pea gravels fillings (coarse sand mud free) washed pee gravels of size 4 mm to 6 mm for filling packing around casing of deep tube well for derived depth complete all as specified and directed by the Engr -in -Charge. |
| 79 | Supply and fixing forMS column pipes heavy duty 100 mm dia bore, both end threaded with heavy duty socket or fixed with two Nos flanges on both end, including welding and painted with electrical spray machine both inside and outside with two coats of black anti- corrosive syntheticpaint (suitable for drinking water) over two coats of red oxide primer all as specified and directed. |
| 80 | Supply and fixing for MS column pipes heavy duty 80 mm dia bore, both end threaded with heavy duty socket or fixed with two Nos flanges on both end, including welding and painted with electrical spray machine both inside and outside with two coats of black anti- corrosive syntheticpaint (suitable for drinking water) over two coats of red oxide primer all as specified and directed. |
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